二维地震叠偏剖面作图方法的疑难问题  

A problem arisen from mapping with 2-D seismic migration

作　　者：祝伟业[1] 付连义[1] 张学武[1] 

机构地区：[1]辽河油田研究院,辽宁盘锦124010

出　　处：《石油物探》2002年第2期243-252,共10页Geophysical Prospecting For Petroleum

摘　　要：利用单斜构造摸型对T0 空校作图方法的正偏移和反偏移进行计算 ,结果表明“三维空间偏移量可以分解为测线x方向上和垂直于x方向的 2个分量 ,它们恰好是沿着这 2个方向上的二维偏移量”的结论对v(z) =v0 (1+βz)时的连续介质而言是不成立的 ,从而使有关的叠偏剖面作图方法在原理上出现了疑难问题。The calculation of migration and demigration of T 0 spatial correction mapping is carried on a monoclinal structure model in the paper. When the medium is of v(z)= v 0(1+βz) , the computational results disagree with argument that 3 D migration offset can be split into two components pointing respectively in x direction and vertical direction, and they are just the 2 D migration offset in these two directions, therefore producing an difficult problem for mapping with 2 D migration section.

关 键 词：二维地震叠偏剖面 作图方法 单斜构造模型 偏移 反偏移 连续介质 地震勘探 

分 类 号：P631.44[天文地球—地质矿产勘探]